println(spiClockSpeed); } void loop() { // 主循环中可以添加其他SPI通信相关的代码 } 在上面的代码中,SPI_CLOCK_DIV64是一个预定义的宏,表示分频因子为64。你可以根据需要将其替换为其他预定义的宏,如SPI_CLOCK_DIV2、SPI_CLOCK_DIV4等,来设置不同的分频因子。 4. 将代码上传到Arduino开发板进行测试...
If any of your settings are variables, you may create a SPISettings object to hold the 3 settings. Then you can give the object name to SPI.beginTransaction(). Creating a named SPISettings object may be more efficient when your settings are not constants, especially if the maximum speed is...
// spi 模式 (相位/极性) i.e one of SPI_MODE0 | SPI_MODE1(默认)| SPI_MODE2 | SPI_MODE3sensor.spi_mode=SPI_MODE0;// SPI 时钟信号速度 - 默认 1MHzsensor.clock_speed=500000; 在配置相关参数后,唯一要做的是调用init()函数。该函数预备了SPl接口和初始化传感器。磁性传感器初始化代码如下: ...
· shiftOut(dataPin, clockPin, bitOrder, value)SPI外部IO扩展函数,通常使用带SPI接口的74HC595做8个IO扩展,dataPin为数据口,clockPin为时钟口,bitOrder为数据传输方向(MSBFIRST高位在前,LSBFIRST低位在前),value表示所要传送的数据...
arduino pro micro板没有支持串口直接烧录代码,不能像arduino uno一样插上电脑写好代码直接一键编译上传...
;// OPTION 2 lets you interface the display using ANY TWO or THREE PINS,// tradeoff being that performance is not as fast as hardware SPI above.//#define TFT_MOSI 11 // Data out//#define TFT_SCLK 13 // Clock out// For ST7735-based displays, we will use this call//Adafruit_ST...
and quality of wiring, if you go too fast, you// may end up with a black screen some times, or all the time.//tft.setSPISpeed(40000000);Serial.println(F("Initialized"));uint16_ttime =millis(); tft.fillScreen(ST77XX_BLACK);...
// tradeoff being that performance is not as fast as hardware SPI above. //#define TFT_MOSI 11 // Data out //#define TFT_SCLK 13 // Clock out // For ST7735-based displays, we will use this call //Adafruit_ST7735 tft = Adafruit_ST7735(TFT_CS, TFT_DC, TFT_MOSI, TFT_SCLK, TF...
shiftOut(dataPin, clockPin, bitOrder, value) SPI外部IO扩展函数,通常使用带SPI接口的74HC595做8个IO扩展,dataPin为数据口,clockPin为时钟口,bitOrder为数据传输方向(MSBFIRST高位在前,LSBFIRST低位在前),value表示所要传送的数据(0~255),另外还需要一个IO口做74HC595的使能控制。unsigned long puls...
函数说明:/** * 设置总线时钟(I2C SPI) * @param mode clock_speed 总线时钟频率(Hz) * @Note 关联方法 begin */ void U8G2::setBusClock(uint32_t clock_speed); 1. 2. 3. 4. 5. 6.注意点:仅仅Arduino平台支持; 必须在u8g2.begin() 或者 u8g2.initDisplay()之前调用;...